Solar-thermochromism of a hybrid film of VO₂ nanoparticles and Co^II–Br–TMP complexes

Abstract

This work reports a VO2/CoII–Br–TMP hybrid film with excellent optical performance and an evident temperature-dependent colour change.

One-step hydrothermal synthesis of rare earth/W-codoped VO2 nanoparticles: Reduced phase transition temperature and improved thermochromic properties

“…In order to improve the thermochromic performance of VO 2 nanomaterials, several techniques have been applied to modify the physical and/or chemical characteristics of VO 2 nanomaterials. This includes the porous assembly [14][15][16][17], nanocomposite [18][19][20][21][22], patterning [11,23,24], antireflection coating [25,26] as well as the doping [3,27]. Among these techniques, doping is an easy-to-control and cost-effective choice for tailoring the thermochromic properties of VO 2 .…”

Li+/Al3+ Composite Solid Electrolyte Based Electro‐Thermal Dual Responsive Devices with Optimized Optical Contrast and Cycle Durability

“…There are two main trends: one is to enhance the modulation ability of VO 2 -based TCDs in the visible region and avoid inherent yellow color, the other is to improve optical contrast and cycle stability of WO 3 -based ECDs. As for VO 2 -based TCDs, Zhu et al [11] combined VO 2 nanoparticles with Co II -Br-TMP complexes to display evident color-change behavior in response to temperature change with enhanced optical performance. Recently, Zhao et al [12] introduced a fluorescence layer on top of photochromic layer to form a three-layer fluorescence/photochromism/VO 2 structure, which could display highly transparent before coloration and further can dynamically change to other colors according to different intensities of UV light.…”

Composite Film of Vanadium Dioxide Nanoparticles and Ionic Liquid–Nickel–Chlorine Complexes with Excellent Visible Thermochromic Performance

“…To address this critical issue, some transition metal complexes (TMCs) that exhibit thermochromism with little T lum loss at high temperature were chosen to be hybridized with VO 2 NPs reported by our group. 33 The TMCs we used can partly absorb visible light and change color as a response to temperature change upon interaction with an appropriate donor solvent and effectively avoid severe damage to T lum at high temperature because the absorption peaks are staggered with the extremum of the light-adapted eye sensitivity function. Through combination of the TMCs and VO 2 NPs, outstanding optical performance (ΔT sol = 20.82% and T l , lum = 62.73%, T h , lum = 55.77% for VO 2 /Co II −Br−TMP film) can be obtained compared with other VO 2 -based materials.…”